Sewer-gas trap



(N ModeL) J., A. BURGESS.

SeWer-Gas Trap.

Patented May 11, 1880.

O m 00 O0 co o N. PETERS, PNDTO-LITHOGRAFHER, WASHINGTON. D, G

UNITED STATES PATENT OFFICE.

JOSEPH A. BURGESS, OF WORCESTER, MASSACHUSETTS.

SEWER-GAS TRAP.

SPECIFICATION forming part .of Letters Patent No. 227,411, dated May 11,1880.

Application filed March 15, 1880.

' tudinal section, and Fig. 3 a transverse section, of a trap of myimproved kind, the latter section being taken through the rear part ofthe box or chamber in order to represent the air-jet orifices ofdischarge.

The trap as described is for the purpose of preventing gas from a sewerfrom passinginto an apartment or building by means of a pipe fordischarging waste-water from a sink or other device in said apartment orbuilding, the na" ture of my invention being duly set forth in theclaims hereinafter made.

In the drawings, A denotes an elongated box or chamber, having itsbottom a somewhat inclined to its top, or to the horizon, the said boxhaving entering the upper part of its lesser or rear end a waste-waterinduct or pipe, B. The box also is provided at the lower part of itsfront or greater end with an educt, C, for conveying the waste-waterfrom the box to a drain or sewer. Furthermore, the box has extendingacross it from side to side of it, and from its top to within a shortdistance of its bottom, a deflector or inclined partition, D. It alsohas, or may have, between the said inclined partition and the educt O avertical cross-partition, E, which extends upward from the bottom to aheight greater than the distance between the bottom of the box and thatof the inclined partition.

Over the vertical partition, and leading out of the top of the box, is agas-educt, F, which maybe a spout leading from a roof-gutter, andserving not only to carry off the sewer-gas from the box, but todischarge water from such roof directly into the box. Against the lesserend of the box or chamber, and encompassing the induct B thereof, is anair-supply apparatus or jet, G, consisting of a drum provided with apipe, I), for conducting air into it, and

also having leading out of it and through the end of the box a series ofapertures, c c 0, arranged in a circle about the waste-waterinduction-pipe B of said end of the box.

In some cases, or where it may not be desira- (No model.)

thereof, air will be induced to flow from the air-jet into the chamber,and especially around the waste-water induct. Such air and wastewaterwill impinge against the inclined partition, and by it will be deflecteddownward, and will pass underneath it toward the educt, the waste-waterescaping through the latter,"and the air facilitating the escape throughthe spout of any sewer-gas which may have passed into the box orchamber.

l/Vith the two partitions in the box, water will remain within the spacebetween the vertical partition and the rear or lesser end of thechamber, and will rise to a level with the upper edge of said partition,and consequently above thelower edge of the inclined partition, and withsuch partition will prevent any sewergas from passing from the front tothe rear side of the inclined partition, and thence into the Waste-waterpipe and sink thereof, such gas escaping from the box through the spout.

As air will be drawn into the box by means of the air-jet while wastewater may be passinginto and out of the box, such air, whether thevertical partition is used or not, will aid in ventilating the box andfacilitating the escape of waste-water.

I claim as my invention as follows, viz:

1. A ventilating sewer-gas trap consisting of the box or chamber A, theroof-water spout or induct F, the waste-water induct B and ednct O, thedeflecti n g-partition D, and the air-induction jet G, all arranged andto operate substantially as specified.

2. The combination of the box or chamber A, the two partitions D E, thewaste-induct B and educt O, and the air-induction jet Gr, all arrangedessentially as explained.

3. The combination of the box or chamber A, the roof-water induct F, thewaste-water induct B and educt O, the two partitions D E, and theair-jet G, all arranged substantially as

